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P. & J. HAINSWORTH.

APPARATUS FOR DISPOSINGOF NOXIOUS GASES.

No. 248,456 Patented Oct. 18,1881.-

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"i611 e s s as" My 41m NITED STATES PATENT OFFICE.

FREDERICK HAINSl/VORTH AND JONATHAN HAINSWORTH, OF CHICAGO,

ILLINOIS; SAID JONATHAN HAINSWORTH ASSIGNOR TO SAID FRED- ERICK HAINSWORTH.

APPARATUS FOR DlSPOSlNG OF NOXIOUS GASES.

SPECIFICATION forming part of Letters Patent No. 248,456, dated October 18, 1881.

Application filed May 21, 1878.

To all whom it may concern Be it known that we, FREDERICK HAINS- WORTH and JONATHAN HAINSWORTH, of the city of Chicago, in the county of (look and State of Illinois, have made certain new and useful Improvements in Apparatus and Process for Disposing and Destroying Noxious Gases and Vapors, of which the following is a specification, reference being had to the accompanying drawings, and to the figures and letters of reference thereon.

In treating animal substances-such as lard, trimmings, refuse, Ste-vapors and gases of a repulsive and unhealthy nature arise, according to the character of the substance being treated. Those arising from treating leaf-lard are comparatively mild, while those arising from treating the more uncleanly parts-such as trimmings, refuse, &c. are more repulsive and unhealthy. The scraps or fixed matter left from rendering the various substances above referred to are manufactured into an article of commerce known as fertilizer, and used for agricultural purposes.

In rendering lard it is placed in tanks of sufficient size and capable of resisting pressure to a high degree, similar to a steam-boiler. Live steam is then admitted into this tank from a steam-boiler, and is allowed to remain there a certain time sufficient to disengage the fatty matter or lard from the scraps 0r fixed matter. The fatty matterorlardis then drawn off and the scraps or fixed matter left in the tank. After the fatty matter or lard is drawn off it is removed and placed under pressure to expel, as far as possible, any remaining fatty matter or lard. It is then placed in other tanks or ovens or driers, and submitted to a slow heat for the purpose of drying it. The other class of substances mentioned above viz., trimmings, refuse, &c.are treated in. the same manner; but a different grade of fatty matter or lard is produced, and the fixed mat ter or scraps are placed in tanks, ovens, or driers and submitted to a similar heat, and it is from this last class of material that the most noxious and unhealthy gases and vapors arise, which endanger public health and comfort.

The noxious gases produced in a large rendering-tank or oven are in volume very large, and in destroying them such means and facilities have to be employed as will destroy them as fast as they are produced. Various gases have a great affinity for water, and will be absorbed by water in various degrees and amount, according to the pressure under which they are brought together; but when relieved of the pressure all gases in the water in excess of what the water will naturally absorb will be released and escape into the open air, unless confined. In order that water may absorb such an amount of noxious gases as it naturally would, more or less time would be taken. If the time the water and gas are in each others presence is too brief, then the water-will not absorb all the gas it is capable of, and were the water allowed to pass into the sewer or sub-earth conduit there would be a loss of so much material for the destruction of noxious gases, and its place would have to be supplied with new or fresh water, involving so much additional expense. To save this additional expense, before the water passes away it is compelled to absorb all the gas it is capable of, and this is accomplished by extending or prolonging the time the two substances (water and gas) are in each others presence, thus enabling the water to absorb the gases to its fullest capacity. v

Our invention has for its object the destruction of these noxious gases and vapors, which we do by treating them as hereinafter described.

Figure 1 is a perspective view, and Figs. 2-

and 3 are detailed views, of our apparatus.

Similar letters of reference refer to similar parts in the different drawings.

A is a tank, made of any size required and of any suitable material, preferably we make it of metal and sufficiently strong to withstand the pressure brought to bear upon it.

J is a tank located near the tank A, and madeof suitable material and sufficientlystrong to withstand any pressure brought to bear upon it, and preferably made of metal. This tank J discharges the same function as the tank A-- viz., to receive both water and gas, to mingle them together that the water may absorb the gas.

D D are pipes leading from the renderingtank or ovens or driers into the tank A,through the couplings a a and pipes O O.

E E are pipes leading into the coupling a a.

F F are pipes leading into the coupling a a.

I I are pipes leading into couplings d d and through pipe G into tank A.

H H are pipes leading into couplings d d.

L is a pipe leading from the top of tank A, through the pipe g and 9, into the tank J, below the perforated diaphragm K.

m is a coupling in pipe g and g.

L is a pipe leading into the coupling m.

M is a common faucet to draw off the,liquid therein.

N is a man-hole to provide access to the interior of the tank A for the purpose of cleaning it. n n are stop-cocks in the various pipes.

J is a pipe leading from the bottom, or near the bottom, of tank A into the top of tank J.

K is a perforated diaphragm located in the tank J, and placed upon the tilting rod f, so as to tilt it, if desired.

h is apipe leading from the bottom of tank J into the sewer or sub-earth conduit.

The operation of ourinventionis as follows: The pipes D 1) are connected with the rendering tank, wherein is placed the lard or trimmings or refuse, 81.0., as the case may be, or the oven or drier, wherein is placed the fixed matter from the remlering-tank, as the case may be. As the live steam is admitted into the rendering-tank from the steam-boiler the process of rendering or separating the fatty matter or lard from the fixed matter begins, and at the same time the noxious gases and vapors begin to be set tree. After a sutficient time has elapsed, when the connection is with the rendering tank, the pipe D is opened and the noxious gases and vapors, together with the steam, are forced, under the pressure of the steam, into the tank A. \Vater from a stated supply is admitted, either by force or from a proper head, into the tank A until it is filled to the height of the pipe J, and continues to flow therein. Thus the noxious gases and vapors and water come into contact with each other, and the process of condensing and absorbing the former by the latter begins. In consequence of the large volume of gases admitted into the tank A, and the brief time for them to remain in there, they are not all absorbed by the water in this tank, nor has the water absorbed all the gases it is capable of. The water, as it continues to flow into the tank A, also continues to flow into the tank Jatits top through the pipe J, and, passing through the perforated diaphragm K, it descends, in

shower form, to the bottom of tank J. The surplus gases not destroyed in tank A pass out through pipe L, g, and 9 into the tank J below the perforated diaphragm K, where they are brought into contact with water from tank A.

The use of the showering water in tank J presents a greater water-surface in immediate contact with the noxious gases and vapors, and consequently their destruction is more rapid and complete. Should any gases and vapors escape destruction in the showering water, they would be destroyed by coming in contact and mingling with the water as it passes down through the diaphragm K into the sewer or sub-earth conduit.

When the pipe D is connected with the rendering-tank wherein live steam is admitted, as previously stated, the pressure of the steam will cause it, together with the noxious gases and vapors, to escape into the tank A with force.

When the pipeDis connected with the drier or oven the heat necessary to dry the fixed matter therein will drive the noxious gases and vapors arising therefrom with force through said pipe D into the tank, and in addition, by the water running into the tank through the pipe F by the end of the pipe D, the force of the noxious ases and vapors is increased or accelerated by exhaustion. By the noxious gases and vapors escaping from the tank, oven, and drier with force and coming into the presence of water under a pressure, their destruction is more rapid and complete.

Should it be desired,cold air can be admitted through the pipe E. [n this event the volume of water used would be reduced according to the temperature of the air.

We claim as follows:

1. The combination of the tank A, pipes D and J, and tank J, substantially as shown and described.

2. The tank J, provided with the showerproducing diaphragm K, the inlet-pipe J, the pipe g, and outlet-pipe h, substantially as described, and for the purpose shown.

3. The method herein described of destroying noxious gases and vapors arising from animal substances-such as lard, trimmings, refuse, &c.-while they are being treated, by submitting them to the action of water once when the water is in solid form, and once by being sprayed upon by the same water, substantially as shown and described.

FREDERICK HAINSWORTH. JONATHAN HAINSWORTH. Witnesses:

" N. H. SHERBURNE,

WILLIAM EDGAR. 

